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Finding the Fourth Proportional to 13,372.64, 20,063.28 and 5,583.68

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Solution

The fourth proportional to 13,372.64, 20,063.28 and 5,583.68 is: 8,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,372.64 : 20,063.28 = 5,583.68 : x
  2. Step 2: Convert to fraction form
    13,372.64/20,063.28 = 5,583.68/x
  3. Step 3: Cross multiply
    13,372.64x = 20,063.28 × 5,583.68
  4. Step 4: Simplify right side
    13,372.64x = 112,026,935.27
  5. Step 5: Solve for x
    x = 112,026,935.27/13,372.64
  6. Step 6: Final answer
    x = 8,377.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.